freebsd-nq/cvmx-core.c

148 lines
4.9 KiB
C

/***********************license start***************
* Copyright (c) 2003-2008 Cavium Networks (support@cavium.com). All rights
* reserved.
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* * Neither the name of Cavium Networks nor the names of
* its contributors may be used to endorse or promote products
* derived from this software without specific prior written
* permission.
*
* TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
* AND WITH ALL FAULTS AND CAVIUM NETWORKS MAKES NO PROMISES, REPRESENTATIONS
* OR WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH
* RESPECT TO THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY
* REPRESENTATION OR DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT
* DEFECTS, AND CAVIUM SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES
* OF TITLE, MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR
* PURPOSE, LACK OF VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET
* POSSESSION OR CORRESPONDENCE TO DESCRIPTION. THE ENTIRE RISK ARISING OUT
* OF USE OR PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
*
*
* For any questions regarding licensing please contact marketing@caviumnetworks.com
*
***********************license end**************************************/
/**
* @file
*
* Module to support operations on core such as TLB config, etc.
*
* <hr>$Revision: 41586 $<hr>
*
*/
#include "cvmx-config.h"
#include "cvmx.h"
#include "cvmx-core.h"
/**
* Adds a wired TLB entry, and returns the index of the entry added.
* Parameters are written to TLB registers without further processing.
*
* @param hi HI register value
* @param lo0 lo0 register value
* @param lo1 lo1 register value
* @param page_mask pagemask register value
*
* @return Success: TLB index used (0-31) or (0-63) for OCTEON Plus
* Failure: -1
*/
int cvmx_core_add_wired_tlb_entry(uint64_t hi, uint64_t lo0, uint64_t lo1, cvmx_tlb_pagemask_t page_mask)
{
uint32_t index;
uint32_t index_limit = 31;
if (!OCTEON_IS_MODEL(OCTEON_CN3XXX))
{
index_limit=63;
}
CVMX_MF_TLB_WIRED(index);
if (index >= index_limit)
{
return(-1);
}
CVMX_MT_ENTRY_HIGH(hi);
CVMX_MT_ENTRY_LO_0(lo0);
CVMX_MT_ENTRY_LO_1(lo1);
CVMX_MT_PAGEMASK(page_mask);
CVMX_MT_TLB_INDEX(index);
CVMX_MT_TLB_WIRED(index + 1);
CVMX_EHB;
CVMX_TLBWI;
CVMX_EHB;
return(index);
}
/**
* Adds a fixed (wired) TLB mapping. Returns TLB index used or -1 on error.
* This is a wrapper around cvmx_core_add_wired_tlb_entry()
*
* @param vaddr Virtual address to map
* @param page0_addr page 0 physical address, with low 3 bits representing the DIRTY, VALID, and GLOBAL bits
* @param page1_addr page1 physical address, with low 3 bits representing the DIRTY, VALID, and GLOBAL bits
* @param page_mask page mask.
*
* @return Success: TLB index used (0-31)
* Failure: -1
*/
int cvmx_core_add_fixed_tlb_mapping_bits(uint64_t vaddr, uint64_t page0_addr, uint64_t page1_addr, cvmx_tlb_pagemask_t page_mask)
{
if ((vaddr & (page_mask | 0x7ff))
|| ((page0_addr & ~0x7ULL) & ((page_mask | 0x7ff) >> 1))
|| ((page1_addr & ~0x7ULL) & ((page_mask | 0x7ff) >> 1)))
{
cvmx_dprintf("Error adding tlb mapping: invalid address alignment at vaddr: 0x%llx\n", (unsigned long long)vaddr);
return(-1);
}
return(cvmx_core_add_wired_tlb_entry(vaddr,
(page0_addr >> 6) | (page0_addr & 0x7),
(page1_addr >> 6) | (page1_addr & 0x7),
page_mask));
}
/**
* Adds a fixed (wired) TLB mapping. Returns TLB index used or -1 on error.
* Assumes both pages are valid. Use cvmx_core_add_fixed_tlb_mapping_bits for more control.
* This is a wrapper around cvmx_core_add_wired_tlb_entry()
*
* @param vaddr Virtual address to map
* @param page0_addr page 0 physical address
* @param page1_addr page1 physical address
* @param page_mask page mask.
*
* @return Success: TLB index used (0-31)
* Failure: -1
*/
int cvmx_core_add_fixed_tlb_mapping(uint64_t vaddr, uint64_t page0_addr, uint64_t page1_addr, cvmx_tlb_pagemask_t page_mask)
{
return(cvmx_core_add_fixed_tlb_mapping_bits(vaddr, page0_addr | TLB_DIRTY | TLB_VALID | TLB_GLOBAL, page1_addr | TLB_DIRTY | TLB_VALID | TLB_GLOBAL, page_mask));
}